The hassfest and HACS validator actions both depend on amd64-only
Docker images (ghcr.io/home-assistant/hassfest, hacs/action). On
ARM64 runners — like the Gitea Actions instance hosting this fork —
those images pull but fail with "exec format error" because no
multi-arch image is published.
Validation still runs on GitHub's amd64 ubuntu-latest runners, where
it actually matters for HACS distribution.
thatguygriff
Sebastien Lavoie